Chemistry Regent Exam August 2022
16. Which unit can be used to express the concentration of a PbCl2(aq) solution? (1) kelvins (2) kilojoules per gram
(3) pascals
(4) parts per million
Explanation: Concentration can be expressed in a variety of different units. If we look at Table T on the reference table, we see two formulas for concentration: parts per million and molarity (mol/L).
Answer: 4